I have used the Hollister band when I first got my ileostomy, since then I have bought a few Stealthbelts, one horizontal, and my go-to the vertical one. Here recently bought a vertical one that was meant for working/exercising... not very happy with it as the zipper goes across the stoma and it's a bitch to get the bag out to drain. Let me know what ones you use and your pros and cons.
I use a Pouchwear diagonal belt. The horizontal Stealthbelt caused occasional pancaking. The Pouchwear's diagonal design lets gravity help with that. There is no zipper just a flap that does a good job of keeping my appliance secure while making for quick access. I wear this at work, in the pool and hot tub. No issues. The only negative is that it seems to be a smaller company that makes these belts as needed. Shipping time can be a couple of weeks. As for night time wear, I just tuck the bag into my shorts and wear a t-shirt.